A kind of preparation method of polymer microsphere immobilized n-hydroxyphthalimide catalyst

Abstract

The invention belongs to the technical field of immobilized N-hydroxyphthalimide catalysts, and specifically relates to a preparation method of polymeric-microsphere-carrier immobilized N-hydroxyphthalimide catalyst. The preparation method is characterized in that intermediate product aldehyde group modified microsphere GMA / MMA-AL, modified microsphere GMA / MMA-PA bonded with a phthalic acid group and microsphere GMA / MMA-PPA loaded with phthalic anhydride PPA are prepared, and finally a functional microsphere loaded with N-hydroxyphthalimide functional microsphere group is obtained. With the preparation method provided by the invention, the efficient organic catalyst N-hydroxyphthalimide (NHPI) is easy to separate and can be reused, a system is easy to purity, and therefore, environment-friendly catalytic oxidation is realized.

Description

technical field

[0001] The invention belongs to the technical field of immobilized N-hydroxyphthalimide catalysts, and in particular relates to a preparation method of polymer microsphere-immobilized N-hydroxyphthalimide catalysts. Background technique

[0002] In the field of organic synthesis industry, the oxidation of hydrocarbons to oxygenates and the oxidation of alcohols to carbonyl compounds are the most important chemical transformation processes. Compared with the traditional oxidation technology using strong oxidants, the oxidation technology route using molecular oxygen as the oxygen source is economical and environmentally friendly. However, for the stable C-H bonds of hydrocarbons, oxygen molecules are less active oxidants. In order to effectively realize the oxidation transformation of molecular oxygen to organic matter, the key issue is to use efficient catalysts to increase molecular oxygen (or bottom The reactivity of the substance) enables the oxidation re...